Rock-crusher.



No. 65o,|05. Patented May 22; man.

E. c. BAcoN.

BUCK CRUSHER.

(Application med oct. 12, 1899.) (No Model.)

35 corresponding end view of the shaft.

. ing is a speciiication.

" vend view of the same.

y UNITED STATES PATENT OFFICE.

EARLE C. BACON, OF NElV YORK, N. Y.

Rook-CRUSHER.-

SPECIFICATION forming part of Letters Patent .N o. 650,105, dated May 22, 1900. Application filed October 12, 1899. Serial No. 733.350. (No model.)

To dll wir/0777, t ntay concern:

Be it known that I, EARLE C. BACON, a.' cilizenof the United States, residing-in the city of New York, borough of Brooklyn, inthe county of Kings and State of New York, have invented a certain new and useful Improvement in Rock-Crushers, of which the follow- The invention relates to that class of crushers in which a swinging toward and from a fixed Vjawlo'y the action of a `pitrnan and toggles. 4 I

The object of the invention is to providea construction in which the strains shall be `distributedto. better advantage andthe liaf ebiltvfof accidentU-byldsplacement due to :vibration'sh'all be lessened.

It consists in special provisions for holding the parts against loosening and in a novelconstruction of -pitrnanin which the metal is disposed in a manner attaining the greatest economy in material and resistance to the strains to which this' porti-on ofthe mechan-r ism is subjected and will be hereinafterfully described. i The accompanying drawings form a part of this specification andl show the invention as I have carried it out. v

Figure l is a plan view, and Fig.f2` a vertical longitudinal section, of the complete crusher. The remaining figures show portions detached. Fig. 3 is a face view of the pitman for operating the toggles. Fig. 4 is a section through one of the shaft-bearings and immediately-adjacent parts, and Fig. 5F'is is a sectional view of a portion securing the toggle-bearing, and Fig. 7 is a corresponding side View. Fig. 8 is a longitudinal section through'the toggle-bearing, and Fig. 9 is an Fig. 10 is a face or plan view of one of the` toggles, and Fig. 11 is a corresponding edge view. Figs. 6, 8, and

I 10 and 7, 9, and 1l show these parts in relative positions but separated.

Similar letters of reference indicate like Darts in all the figures. l The main frame of the crush er,which may be the usual heavy casting, is marked A and is provided with bearings A for thedrivingshaft B, carrying the operating-eccentric B' and ily-wheels and driving-pulleys B2 B3, andV jaw is moved ltheir point of convergence,

en d. Ihave devised a form in which the metal is so distributed as to give unusual strength with the least amount of material,

' thus considerably lessening 'the weight and cost of this portion. It consists of a heavy 'tubular head D receiving the eccentric B',

having webs D2 extending tangentially downward therefremiaclined toward each other, and joined at the lower end D3 of the pitman. The webs D2 are strengthened by the transverse webs D4, closing the ends and forming a4 hollow cast-ing from which the core is removed through the openings d, as will be understood.

D5 D5 are dan ges extending across the faces of. th'e webs I)2 below their line of junction and serve to support the toggle-bearings EE, which are adjusted and locked in place by the wedges F, inserted between the upper faces of the toggle-bearings and the under faces of the ovcrhangino` swells D6 formed on the faces of the pitman. The toggle-bearings are trapezoidal in cross-section, and the faces of the flanges Dfi and Wedgesv Fare cor# respoudingly shaped, so that thel latter are drawn inward. The bearings vare securely locked against outward movement. The adjustment is eiected by a bolt G, passing through the pitman and the vertical arms F' of both wedges-and provided with nuts G? and check-nu ts Gf on the outer ends. A central'nut G', lying between the webs D2 near servesto prevent longitudinal movement of the bolt.` There may be as many sets of the bolts and wedges .asl are found necessary or desirable. I have fshown two sets, one at each side, outside the webs D4.

.D7 D7 are centrally-arranged swells on the head D', aiording large openings through which access may be had to the interiorand grease or other lubricant liberally supplied. -Each llaspa hinged close-fitting cover D, held in the tightly-,closed condition by the swing- IOC bolt D, pivoted"`to the under faces of each vswell and fitting into a deep notch D1o in the notches D10, and the covers may then be gie-bearings dueto vibration, I` provide at each end a rearwardly-extending lug E,which practically the same and operatein a simi-lar isrreceived .i'n acorresponding cavity'd 1a`t each side of the llower end D2 of the p i'tman.

When thus engaged, it is obviously impossible for the bearings-to. crawl transversely' of the pitma-n, and to prevent sixnilar'movements of thetoggles H,l provide lthem'at about the midi-width each with a circular lug or projection H2, encircling' the"v rounded bearing 'edgesH and matchingto ak corre-4 spondingicavitye', formed in thegroovee on the working'face of the toggle-bearin g. Both l edges of each toggle are similarlyequipped,

.and thehearing-blocks in the swing-jaw C' and toggle-block A6 are shaped to match;` The keys for holding the bearingblocksinthe jaw and in the togg.,1fleblocks, as shown, are

manner yto those onV the pitman, being varied onlysoi-inuch as is necessary by reason of' their situationa" ln yorder to avoid endwise movements ofthe jaw-shaft C,- I introduce a pair of oppositely-placed dowel-pins C2 at each end 'and drill or otherwise produce corresponding `holes a, in the bearings As and caps vA1,in which they are received-and held. I t is found in vpractice that the lower' portions" of the side cheeks K adjacent .to the jaws.

are wornv much -`faster than the upper portions, for the reason that agreater proportion loosen the vfixed-jaw plate A5, allowing it to move idly backward and forward and co1"-V 1 'espondingly'-1educing the eilici'encyof the crusher until these parts are again replaced. f

For economy Ain the cheeks and also to guard against the' movement described I provide. leach cheek witha follower K, which is, in effect, a-conti-nuation ofthe cheek, and pro duceinvea'chfv follower lan elongated hole or- Short slot 75,3111atching'- to av corresponding slot o. inthe .frame'formed at a right angle to the slot hand receiving a bolt K2, thrust s through both. slots at their point of crossing` To expose `the openings, it is only necessary to slacken the thumb-nuts suii` ciently to allow the bolts to fall clear of the- 'structiops..

and secured by a nut and check-nut,as showny Thus formed the lower portion K may be renewedwhii worn, andgboth cheek and follower are securely heldin place. The arrangement of cross-slots insures an opening for thej' t-b`ol't K2, even though the parts may not be an exact fit. l

The' caps A2 for the driving-shaft bearing l AfAare provided withopenings soinewhtsimi- To prevent endwise movement of .the toglartp those onthe pitman-head and are closed by covers A12, as before, but omitting the locking device.

The latter will net be generally required, as 'the caps are stationary, -but'maybeadded, if found ,desirable. Lubricantsfnay be supplied-'in large quantities 1 through these'op en-ings,`;and thecloselyqiittingco-vers serve 'to-exclude the dust and" grit lto which 'this class of` machinery is'pec'nliarlyl exposed.

All portions not particularly described will "be understood 'to be ffmly Ordinary gr approved construction.4

Modifications may beunade 'in` the forins fand proportions within wide limits as will'be VVfound. necessary in adapting the invention tomachines of various vsizes andspecial'cQn- ,Icla'im-s` '5 transverse Webs" D4, the wiggle-bearings E,

through said converging. webs and said wedges, thef inner nuts G on'said bolts and Vthe outer nuts G2 thereon, all'combined and `arranged to Aserve substantially as herein of the workis performed at this low point. Another source of troubledue to vibrations is v thertendency of the cheeks to rise, and thus 45 specified.

fa toggle-bearing E, asupport therefor, lugs E E.' onsaidbearing andcavities on said support 'receivingsaid lugs and holding said bination with each other and means'for lock` ing said bearing tosaid support',all substantially'as herein specified'.

Intestiznonythat 1 claim'the invention ence ofltwo witnesses.

aboveset forth I aix iniysignature-in thepres- Witnesses: l -Y CHARLES R. SEARLE, A. L. BovLn.4

' 35 f' 1. In a Crusher, of the'character set forth, the pitman' described, consistingoffthe' t'ubus i, .lar head 'D' inclosing the eccentric B-'converging webs D2 extending tangentiallyfrom the 'head and joined at the lower end D2, vthe Aflanges D2 -supporting"thev latter, swells D? v j-formed on the `pitman,'in proximity'to saidl ganges, wedges l11 F', and bolts Gr extending vbearing against endwise movementfin comnARLncgBAcoN. 

